Burnishing machinery



- 2 sheetssheet 1. w.; 0. WAY. BURNISHING MACHINERY.

(No Model.)

4 5 m m w m m\ 1 P.

(No Model 2 Sheets- Sheet 2. W.O.W.AY. IBIIIRNISHING MAGHINBRY. No. 293,826. Patented Feb. 19 1884.

UNITED STATES WILLIAM C. WAY', OF NEWINGTON, CONNECTICUT.

BURNISHING,

MACHINERY.

SPEGIFICATIbN forming part of Letters Patent No. 293,826, dated February 19, 1884.

- Application filed September 1 5, 1883. (No model.)

To all whom it mag concern: Be it known that 1, WI LIAM 0. WAY, of Newington, in the county of Hartford and State of Connecticut, have invented a certain new and useful Improvement in Burnishing Machinery, of which the following is a description, reference being had to the accompanying drawings, where v Figure 1 is a top view of the parts wherein theimprovement resides. Fig. 2is aside view from side A of a part of the stock-holding standard. The scaleis enlarged in this view as compared with the scale employed in Fig. 1. Fig. 3 is a View, in vertical section, on plane denoted by broken linearx, of aportion of the stock-holding standard. Fig. 4 is aside view.

or elevation of the stock -holding standard from the side opposite A, showing also a side view of aportion of the remaining mechanism. Fig. 5 is an end view or elevation of the stock-' holding standard. Fig. '6-is a view of a part of a mechanism belonging to the prior art.

The mechanism described herein is intended for burnishingboth sides of a knife-blade or similar article at the same time. In order to make the practical application and operation of my present improvement intelligible without presenting an undue number of drawings, and to the end that the limits of my present invention may be the more readily understood, I will refer briefly to the prior art.

In Letters Patent No. 233, 921, granted to me December 28, 1880, there is shown a piston (therein so called) reciprocating both horizontally-and vertically, (the latter very sl owly,) and carrying, hung in a pivoted arm, a wheelburnish held to its work by a spiral spring abutting at one end against the back of said pivoted arm and at the other end against the back of a similar pivoted arm, the opposite side of which arrnlast mentioned bears as it reciprocates (through the medium offa small a wheel) against a proper support. The mechanism shown in my said patent is designed for .burnishing one side of two different pieces of stock at the same time. Several years ago there was in use an unpatented machine for burnishing both sides of an article like a knifeblade at the same time, containing,'in general terms, two pivoted and reciprocating burnishbearing arms, a device for causing the burnishers to traverse the whole width of the blade, a device for holding the stock, springs for pressing the burnishes to contact with the stock, and stops to prevent the burnishes from approaching each other too closely. The more important parts of this device are shown in top View in Fig. 6, wherein A denotes the cross-head. B B denote the pivoted burnish-bearin-g arms. 0 0 denote the springs 61 pressing the burnishes to Contact with the stock, and D D denote the sops to prevent the burnishes from approaching each otheiy' too closely. It will therefore be understood that I do not, in these present Letters Patent, 65

claim as my invention What was shown in my said prior patent, nor, broadly considered", such a machine as I have just described as being in use several years ago.

In the accompanying drawings, the letter a denotes a cross-head, having a pintle, b, in tended for insertion intothe end of such a reciprocating piston-as is shown in my said prior patent, whereby the burnishes will be given the rapid horizontal and the slow vertical reciprocation necessary for making them cover the whole surface to be burnished.

The letter 0 denotes tw'osimilar burnishbearing arms pivoted in the cross-head. Each is provided with a wheel-burnish, d. The 8t to the burnish-bearing arms, and j thumb-nuts o thereon, by which the burnish-bearing arms and the burnishes may be adjusted laterally. The arms f are not absolutely rigid, but are stiff enough to be practically rigid so far as any function yet described is concerned. By

unscrewing the nuts 3' the spiral springs e are permitted to push the burnishes more nearly together, and by screwing up the nuts j the burnishes are pulled apart. This is the manner in which the screws 1' and nuts j operate to adjust the burnishes laterally.

The letter k denotes the'stock-holding standard, having a foot, it, intended to rest on a table. Thisfoot is provided with a mortise,

A feature of the 85 f and attached thereto.

f, if desired, and when these pattern-plates are 7;. The bolt Z runs through this mortise into the table, making the stock-holding standard longitudinally adjustable, and the nut m serves to fasten the standard in place when adjusted.

The letter n denotes the handle of the knife under process of burnishing, and n denotes the blade thereof, the whole knife being held by the handle meanwhile.

The letters 0 0 denote two vertical levelingserews borne in the stock-holding standard, whereby the knife may be vertically adjusted.

The letter 1) denotes a soft-metal bed. borne in the standard, against which the side of the knife-handle is clamped.

The letter '1 denotes a pivoted clamp hung rotarily on the vertical part of the bolts. The hand-nut t on the horizontal parts of bolt 8 holds this clamp to its work. The top k of the standard It forms one jaw of the clamp.

The letters 1; denote two posts in the nature of stationary cams or guides for the burnishes, rising from a piece attached to the foot of the stock-holding standard. There are patternplates 1; attached to the ends of the armsf, to (Jo-operate with these posts. The purpose of these posts (co-operating with the rounded ends of the pattern-plates just referred to) is to turn the burnishes suddenly outward with a curved movement corresponding with the curve by which the blade of the knife rises to meet the bolster.

The arms f, while sufficiently rigid to answer all the purposes heretofore imputed to them herein, are elastic to that degree that they will spring laterally sufliciently to give the burnishes this outward movement just described. These armsf pull the burnishes outward through the medium of the screws L and nuts The parts '21 are referred to herein as pattern-plates made separate from the arms Obviously these pattern-plates can be made integral with the arms in use they are, to all intents and purposes, integral with the armsf. Moreover, it is further obvious that, instead of having the armsf cooperate in the manner already described with the posts 2;, the pattern plates might be attached directly to the burnish-bearing arms, and they in that position eo-operate with the posts 1), they of course changed inposition to adapt them to the purpose in hand. The real cooperation of function is between the burnishbearing arn1s,the pattern-plates, and the posts. These posts v each have a foot, r, adjustable forward and back in slots or mortises made in the top of the block r', which is screwed to the standard-foot k. The screws 22 hold the posts 7: in place when adjusted. The posts e being really guides for the burnishes when they ride up on the bolster of the knife, I term them herein bolster-guides. These bolsterguides, as! already remarked, are adjustable toward and from the burnishes, for obvious purposes.

I claim as my improvement- 1. In combination, the cross-head a, the pivoted burnish bearing arms 0, the spiral springs e, and the arms 1, wholly supported against thcoutward pressure of said springs by said cross-head, all constructed and arranged to operate substantially as shown and described, and for the purpose set forth.

2. In combination, the cross head a, the two pivoted lmrnish-bearing arms a, the spiral springs c, the arms], wholly supported against the outward pressure of said springs by said cross-head, and the adjusting screws and nuts 6 17, all constructed and arranged to operate substantially as shown and described, and for the purpose set forth.

3. In combination, the cross head a, the pivoted hurnish-beariug arms 0, the arms f, the spiral springs 12, and the rubber springbcds g. all constructed and arranged to operate substantially as shown and described, and for the purpose set forth.

1. In combination. the stock-holding standard k, hearing the clamp-jaw the pivoted clamp r, the bolt 8, and the nut i, all constructed and arranged to operate substantially as shown and described, and for the purpose set forth.

5. In combination, the stock-holding standard In, bearing the elamp-jaw the pivoted clamp r, the bolt 3, the nut 2, and the levelingserews 0, all constructed and arranged to operate substantially as shown and described, and for the purpose set forth.

(5. The combination of the posts 1: and the pattern -plates v with the pivoted burnishbearing arms and suitableintermediate parts, substantially as described, and for the purpose set forth.

'7. The combination of the adjustable posts 2: and the pattern-plates v with the pivoted lmrnislrbearing arms and suitable intermediate parls, substantially as described, and for the purpose set forth.

\VILLI AM 0. \VAY.

'itnesses:

TM. E. SIMONDS, ALBERT O. TANNER. 

